Moderator

You all do you. What one player deems "worth" will vary from another's. You can get those 900b abyss ugs for "free," or farm lv1's for gold, whatever. Do what fits your play style.

Is there a mathematically best solution? Yes, there usually is. I haven't done the calculations, but they can be done. But that answer won't make everyone happy with their own use. Follow your heart, and/or wallet.